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学科主题: 物理化学
题名: Conversion of methanol over H-ZSM-22: The reaction mechanism and deactivation
作者: Li, Jinzhe1;  Wei, Yingxu1;  Qi, Yue1;  Tian, Peng1;  Li, Bing1;  He, Yanli1;  Chang, Fuxiang1;  Sun, Xinde1;  Liu, Zhongmin1
通讯作者: 刘中民
关键词: ZSM-22 ;  Methanol ;  Methylation ;  Propene ;  Ethene ;  MTO
刊名: CATALYSIS TODAY
发表日期: 2011-04-30
DOI: 10.1016/j.cattod.2010.10.095
卷: 164, 期:1, 页:288-292
收录类别: SCI ;  ISTP
文章类型: Article
部门归属: DNL12
项目归属: DNL12
产权排名: 1,1
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Applied ;  Chemistry, Physical ;  Engineering, Chemical
摘要: Conversion of methanol over H-ZSM-22: The reaction mechanism and deactivation
研究领域[WOS]: Chemistry ;  Engineering
英文摘要: Conversion of methanol to olefins (MTO) over H-ZSM-22 was carried out in the pulse and the continuous-flow reaction systems. (13)C labeling technique was used to reveal the reaction mechanism. The materials retained in the deactivated catalyst were detected by GC-MS after dissolving the catalyst framework and then extracting the organic species. The adsorption of these materials in ZSM-22 channels was computationally modeled. The results showed that the olefin methylation-cracking mechanism is the main route for the conversion of methanol over H-ZSM-22. It was suggested that the blockage of the zeolite pore openings by the coke species might be the reason of the relatively rapid deactivation of H-ZSM-22, instead of the prohibition of the formation of large transition-state intermediates involved in hydrocarbon pool mechanism. (C) 2010 Elsevier B. V. All rights reserved.
关键词[WOS]: TO-HYDROCARBONS REACTION ;  CATALYZED METHYLATION REACTIONS ;  ACIDIC ZEOLITE CATALYSTS ;  CO-REACTION ;  OLEFIN CONVERSION ;  MTO REACTION ;  SAPO-34 ;  ETHENE ;  CAVITIES ;  PROPENE
语种: 英语
WOS记录号: WOS:000289716300051
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/115837
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, Natl Engn Lab Methanol Olefins, Dalian 116023, Peoples R China

Recommended Citation:
Li, Jinzhe,Wei, Yingxu,Qi, Yue,et al. Conversion of methanol over H-ZSM-22: The reaction mechanism and deactivation[J]. CATALYSIS TODAY,2011,164(1):288-292.
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